Date: Tue, 21 Apr 2009 23:48:23 -0600 (MDT) From: "M. Warner Losh" <imp@bsdimp.com> To: gperez@entel.upc.edu Cc: usb@freebsd.org, current@freebsd.org, wsk@gddsn.org.cn Subject: Re: boot panic on current(04.20) Message-ID: <20090421.234823.-4293171.imp@bsdimp.com> In-Reply-To: <41877.147.83.40.213.1240324705.squirrel@webmail.entel.upc.edu> References: <49ED3E7D.8080606@gddsn.org.cn> <41877.147.83.40.213.1240324705.squirrel@webmail.entel.upc.edu>
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In message: <41877.147.83.40.213.1240324705.squirrel@webmail.entel.upc.edu>
"Gustavo Perez Querol" <gperez@entel.upc.edu> writes:
: > lists
: > boot panic on current(2009.04.20).it seems caused by usbus4
: >
: > Root mount waiting for: usbus4
: > uhub4: 8 ports with 8 removable, self powered
: > Root mount waiting for: usbus4
: > ugen4.2: <NEC> at usbus4
: > Fatal trap 12: page fault while in kernel mode
: > cpuid = 0; apic id = 00
: > fault virtual address = 0x0
: > fault code = supervisor read, page not present
: > instruction pointer = 0x20:0xc08ed3a3
: > stack pointer = 0x28:0xe4c38b40
: > frame pointer = 0x28:0xe4c38b44
: > code segment = base 0x0, limit 0xfffff, type 0x1b
: > = DPL 0,pres 1, def32 1, gran 1
: > processor eflags = interrupt enabled, resume, IOPL = 0
: > current process = 28 (usbus4)
: > trap number = 12
: > panic: page fault
: > cpuid = 0
: > uptime: 5s
:
: I'm having the same problem with my laptop. It fails (if I remember
: well) when checkig an <O2 Micro> device (probably my card reader, don't
: know). When rebooting got to loader prompt, unload kernel and load
: /boot/kernel.old/kernel. This arrises a few questions :
:
: 1.- How can I install a custom kernel under a different directory
: under /boot. I did it, but I can't find how (google doesn't
: help)I did it. I think there's a define when installing the
: kernel.
make installkernel KERNEL=fred
will install the kernel into /boot/fred. Might want to look add
# Debugging for use in -current
options KDB # Enable kernel debugger support.
options DDB # Support DDB.
to the kernel so you can get a traceback...
: 2.- nextboot allows me to choose a different kernel a give it
: options, but is it possible to make the changes permanent ?
Not sure. I don't use nextboot.
: Well, now I'm csup down to current 18/04. Hope it will work :)
:
: Excuse me for the previous mail, that webmail I'm using is driving me
: more crazy :)
Web mail has been known to do that to me too.... :)
Warner
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